Electromagnetic wave absorbing particle dispersoid and electromagnetic wave absorbing laminated transparent base material

Abstract

An electromagnetic wave absorbing laminated transparent base material includes a plurality of sheets of transparent base materials; and an electromagnetic wave absorbing particle dispersoid including at least electromagnetic wave absorbing particles and a thermoplastic resin. The electromagnetic wave absorbing particles contain hexagonal tungsten bronze having oxygen deficiency. The tungsten bronze is expressed by a general formula: M x WO 3−y (where one or more elements M include at least one or more species selected from among K, Rb, and Cs, 0.15≤x≤0.33, and 0<y≤0.46). Oxygen vacancy concentration N V in the electromagnetic wave absorbing particles is greater than or equal to 4.3×10 14 cm −3 and less than or equal to 8.0×10 21 cm −3 . The electromagnetic wave absorbing particle dispersoid is arranged between the plurality of sheets of the transparent base materials.

1 . An electromagnetic wave absorbing laminated transparent base material, comprising:
 a plurality of sheets of transparent base materials; and   an electromagnetic wave absorbing particle dispersoid including   at least electromagnetic wave absorbing particles and a thermoplastic resin,   wherein the electromagnetic wave absorbing particles contain hexagonal tungsten bronze having oxygen deficiency,   wherein the tungsten bronze is expressed by a general formula: M x WO 3−y  (where one or more elements M include at least one or more species selected from among K, Rb, and Cs, 0.15≤x≤0.33, and 0<y≤0.46),   wherein oxygen vacancy concentration N V  in the electromagnetic wave absorbing particles is greater than or equal to 4.3×10 14  cm −3  and less than or equal to 8.0×10 21  cm −3 , and   wherein the electromagnetic wave absorbing particle dispersoid is arranged between the plurality of sheets of the transparent base materials.